Clear water, handled.
Track water chemistry, log every chemical dose and service, and export a beautiful PDF when it's time to sell. Your pool, perfectly documented.
Pool owners everywhere juggle sticky notes and text threads. Skimmer is the iPhone-first answer — chemistry, tasks, and history in one place.
A documented pool history adds thousands to your home's sale. Skimmer builds that PDF for you, ready to hand to your buyer or inspector.
Calendar-based nudges that respect your time. Never miss a shock treatment, filter clean, or salt cell inspection again.
Built for the way pool owners actually maintain their pools.
Four small steps. One beautiful PDF when it counts.
Add your pool
Name, type (chlorine, saltwater, etc.), surface, shape, and volume. Snap a photo. Skimmer pre-loads the right maintenance schedule for your pool type.
Test your water
Log pH, free chlorine, alkalinity, calcium hardness, and more. Skimmer tells you what's balanced, drifting, or out of range — and what to add.
Stay on top of maintenance
Skim, brush, backwash, clean the salt cell. Skimmer tracks every task and reminds you before anything slips. Snap a photo, save a receipt.
Export your PDF
When you sell — or just want proof — export a complete service-history report. Beautifully laid out, every chemical dose and service record included.
Everything you need.
Nothing you don't.
Water chemistry tracking
Log pH, free chlorine, alkalinity, calcium hardness, cyanuric acid, and salt. Balanced / drifting / out-of-range status at a glance.
Chemical dosing log
Record every chemical addition with date, product, and quantity. Know exactly what went in and when — no more guessing.
Photo-first timeline
Snap the cartridge you replaced. Save the receipt. Build a visual record your future self (and home buyer) will love.
Resale-grade PDF
Branded, beautifully laid out, complete with every test result, chemical dose, and service record. Attach to your home listing.
Document storage
Store equipment manuals, warranties, inspection reports, and service contracts. Get reminded before anything expires.
Multi-pool support
Vacation home, rental property, HOA pool — track them all. Pro tier supports unlimited pools and equipment.
A pool with documented care is worth thousands more at resale.
Home inspectors and pool service pros say it plainly: no records means no proof of care. A gap in chemical history or missed equipment service is a red flag that deflates your asking price.
The average pool owner spends $1,200–$3,000 a year keeping their water clear and equipment running. Skimmer makes sure every dollar of that work travels with the house — and with you, into your next one.
- Never guess when you last shocked the pool
- Track pH, chlorine, alkalinity, and salt in one place
- Get reminders before chemistry drifts out of range
- Log pump, filter, and heater service for your records
- Hand a beautiful PDF to your home buyer or inspector
Every kind of pool owner, covered.
New Pool Owners
You just bought a house with a pool. Skimmer tells you what to test, when to test it, and what a normal reading actually looks like.
Veteran Pool Owners
Retire the notebook by the equipment pad. Skimmer keeps the chemistry history you've been tracking for years, but searchable and chartable.
Smart Monitor Refugees
Sutro and pHin are gone. Skimmer gets you back to at-a-glance water chemistry status, no subscription hardware required.
Pool Pros
Leave every client a documented, professional-looking service record instead of a verbal 'looks good.'
Home Sellers
Prove your pool was cared for. Start logging before you list, and hand buyers a service history instead of a promise.
Saltwater Pool Owners
Salt cells run on their own maintenance rhythm. Track salt level, cell cleanings, and chemistry that isn't quite the same as a chlorine pool.
Above-Ground Pool Owners
Simpler equipment, real maintenance needs. Skimmer scales to your pool instead of assuming a five-figure equipment pad.
Seasonal Pool Owners
Freeze-climate open and close, off-season checks, and a chemistry history that doesn't reset to zero every spring.
Vacation Rental Hosts
Track every pool you're responsible for, prove the water was safe, and never mix up which property needs what.
One plan. Less than a single pool service visit.
Pool Math charges $7.99/yr and still looks like 2012. Skimmer costs $19.99/yr and pays for itself the day you sell.
7-day free trial · Cancel anytime
Everything you need to keep a full pool service history — and prove it to the next buyer.
- Unlimited pools and equipment
- Unlimited water test logs
- Chemical dosing history
- Photo-first maintenance timeline
- Resale-grade PDF service history
- Document storage (manuals, warranties, inspection reports)
- Receipt capture & cost tracking
- Calendar-based maintenance reminders
Auto-renews until cancelled in iOS Settings → Apple ID → Subscriptions.
| Feature | Skimmer | Spreadsheet | Others |
|---|---|---|---|
| Cost per year | $19.99 | Free | $60–$80 |
| Offline access | ✓ | ✓ | ✗ |
| Photo timeline | ✓ | ✗ | Limited |
| Water chemistry tracking | ✓ | ✗ | Basic |
| Resale-grade PDF export | ✓ | ✗ | Weak |
| Multi-pool support | ✓ | Messy | Limited |
| Equipment service reminders | ✓ | ✗ | ✗ |
| Data stays on your device | ✓ | ✓ | ✗ |
| Honest, no-rug-pull pricing | ✓ | ✓ | ✗ |
How Skimmer compares.
Real feature-by-feature breakdowns, not marketing claims. Including what to do if your smart water monitor was discontinued.
Pool Math
The calculator app the Trouble Free Pool community trusts, built for a single reading at a time, not an ongoing log.
Compare →Pooli
Positioned as a premium, full-service pool app, at a price that's hard to justify against what it delivers.
Compare →Sutro
A smart floating water-testing sensor and subscription that, per public reports, was discontinued in 2025.
Compare →pHin
A smart pool water monitor, hardware plus subscription, that was discontinued, leaving owners without automated readings.
Compare →Your pool records, on your terms.
No backend. No accounts. No analytics. No selling your data. Skimmer respects your privacy as thoroughly as we respect your water balance.
Your data is yours
Skimmer has no backend servers. Your chemistry logs, service records, and photos live on your iPhone, optionally synced via iCloud. We can't see them, and no third party can either.
Built on iCloud
Syncing is handled by Apple's CloudKit — the same technology that secures your Photos, Messages, and iCloud Keychain. No account creation. No passwords to remember.
Offline by design
Your pool history is always available offline. Log a water test or service record at the equipment pad, pool deck, or anywhere — it syncs when you're back on Wi-Fi.
No tracking
We don't track usage, collect analytics, or sell data. Skimmer respects your privacy as thoroughly as we respect your water balance.
End-to-end encrypted
Every record sent to iCloud is encrypted before leaving your device. Apple can't read it. We can't read it. Only you can.
Data export anytime
Want your data back? Export everything as JSON with one tap. Switch apps, import to Sheets, or print your whole history. It's yours.
For the paranoid: Skimmer is built in Swift 6 and compiled to native iOS binary. Every line is auditable. If we went out of business tomorrow, your data would still be on your iPhone because we never held it.
Recommend Skimmer to your clients
Pool service technicians, home inspectors, and real estate agents trust Skimmer to deliver the service records buyers and inspectors ask for. Partner with us.
Client retention
Clients who use Skimmer stay organized and come back when they need your services.
Referral codes
Distribute free trial codes to your network. Track referrals and earn partnership benefits.
Co-branded materials
We'll create marketing assets featuring your firm alongside Skimmer.
Dedicated support
Direct line to the Skimmer team for questions from your clients.
Get partnership details
Tell us about yourself so we can tailor the partnership.
We respect your privacy. No spam, just partnership opportunities.
Questions, answered.
Does Skimmer sync between my iPhone and iPad?
Do I need an internet connection to use it?
What pool types does Skimmer support?
Will my service history really add value at resale?
Does Skimmer track water chemistry?
Can I track multiple pools?
Can I cancel my subscription?
Do you store my data on your servers?
Your pool history
starts today.
Free to download. 7-day free trial on Pro. Cancel anytime. No account, no email, no friction.
Wherever you're starting from, Skimmer meets you there.
Still using a spreadsheet or a notebook by the pump?
You already track dosing and service dates somewhere — Skimmer just replaces the sheet with reminders, trends, and a record that can't get left in the rain.
Just bought a house with a pool?
Skimmer starts you off with the right maintenance schedule for your pool type — no guessing what "balanced" water even means.
Lost your smart water monitor?
If your pool's hardware sensor was discontinued, Skimmer gives you the same at-a-glance chemistry status without a subscription to a device that no longer ships.
Pro plan, 7-day free trial
Backend, servers, or accounts
Works fully offline, on-device